Yeah, lots of "wrong" in there. Disc brakes are FAR, FAR easier to properly adjust and maintain than rim brakes. I probably don't touch my disc brakes for 3 or 4 months at a time, and when I do, it's a quick look and a few clicks on the dial, maybe 20 seconds, and it's perfect.

My rear wheel is still rim brakes, and to even get out the tools to do a small adjustment to it takes a few minutes, then twice that time to get the adjustment right. Toe-in can be particularly difficult to get right.

Also, as was mentioned, cheaper to run. I buy my pads off eBay for $6 per pair, and they last about a year. The replaceable rim brake pads that I use are about $4 a pair, and when I was using them up front I'd go through 2 or 3 sets a year.

That's not to mention the $60 rims that I'm no longer destroying at a rate of one every couple of years (now I'm only destroying the rear wheel every 2 years).